[Sync] Add support for enabling session sync remotely.

chrome/browser/sync/profile_sync_service_harness.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/sync/profile_sync_service_harness.h"
 
 #include <stddef.h>
 #include <algorithm>
 #include <iterator>
 #include <ostream>
@@ skipping 856 matching lines @@
                << kLiveSyncOperationTimeoutMs / 1000
                << " seconds.";
     return false;
   }
   return IsTypeEncrypted(type);
 }
 
 bool ProfileSyncServiceHarness::IsTypeEncrypted(syncable::ModelType type) {
   syncable::ModelTypeSet encrypted_types;
   service_->GetEncryptedDataTypes(&encrypted_types);
-  if (encrypted_types.count(type) == 0) {
-    return false;
-  }
-  return true;
+  return (encrypted_types.count(type) != 0);
+}
+
+bool ProfileSyncServiceHarness::IsTypeRegistered(syncable::ModelType type) {
+  syncable::ModelTypeSet registered_types;
+  service_->GetRegisteredDataTypes(&registered_types);
+  return (registered_types.count(type) != 0);
+}
+
+bool ProfileSyncServiceHarness::IsTypePreferred(syncable::ModelType type) {
+  syncable::ModelTypeSet synced_types;
+  service_->GetPreferredDataTypes(&synced_types);
+  return (synced_types.count(type) != 0);
 }
 
 std::string ProfileSyncServiceHarness::GetServiceStatus() {
   DictionaryValue value;
   sync_ui_util::ConstructAboutInformation(service_, &value);
   std::string service_status;
   base::JSONWriter::Write(&value, true, &service_status);
   return service_status;
 }